FWIW, what may be the largest language program in Japan (called Hippo in Japan and Lex in the US) focuses to an enormous degree on spoken language and does no grammatical training at all. Instead, they try to emulate, as much as possible, learning the way children do. More info:
On the store, you can pick a language you speak, and the languages you want to learn, and it generates a download, with playlists (iPhone) that mix the audio segments in a variety of ways: https://audio.lexlrf.org/#!Customize
(They are a non-profit and I have done some volunteer programming for them)
Hippo Japan: https://www.lexhippo.gr.jp/english/ The US branch's online store: https://audio.lexlrf.org/
On the store, you can pick a language you speak, and the languages you want to learn, and it generates a download, with playlists (iPhone) that mix the audio segments in a variety of ways: https://audio.lexlrf.org/#!Customize
(They are a non-profit and I have done some volunteer programming for them)